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3.4 Variation and the Human Genome Project

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Question 20

A laboratory recorded the effects of 160 mutations on phenotype.

Effect on phenotypeNumber of mutations
No observable change136
Small change16
Large change8

Which percentage of these mutations changed phenotype?

[1]
A

10%

B

24%

C

85%

D

15%

Markscheme

3.4 Variation and the Human Genome Project Questions

  1. GCSE
  2. /Biology
  3. /3.4 Variation and the Human Genome Project

96 exam-style questions on Edexcel GCSE Biology 3.4 Variation and the Human Genome Project, covering 3.4.1 Causes of variation, 3.4.2 Outcomes of the Human Genome Project, 3.4.3 Genetic variation within a population, and 3.4.4 Effects of genetic mutations on phenotype. Each one has a worked solution and a mark scheme showing where the marks go.

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